/ Dictionary / Index A archness: Meaning and Definition of Find definitions for: arch•ness Pronunciation: (ärch'nis), [key] — n. roguishness; sauciness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: archness (Thesaurus) archly Arch of Triumph Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language